Description of problem: CONFIG_NETCONSOLE and CONFIG_NETCONSOLE_DYNAMIC should be configured for all variants of the 3.6 realtime kernel
Symbol: NETCONSOLE [=n] Type : tristate Prompt: Network console logging support Defined at drivers/net/Kconfig:154 Depends on: NETDEVICES [=y] && NET_CORE [=y] && !PREEMPT_RT_FULL [=y] Location: -> Device Drivers -> Network device support (NETDEVICES [=y]) -> Network core driver support (NET_CORE [=y]) CONFIG_NETCONSOLE_DYNAMIC: This option enables the ability to dynamically reconfigure target parameters (interface, IP addresses, port numbers, MAC addresses) at runtime through a userspace interface exported using configfs. See <file:Documentation/networking/netconsole.txt> for details. Symbol: NETCONSOLE_DYNAMIC [=n] Type : boolean Prompt: Dynamic reconfiguration of logging targets Defined at drivers/net/Kconfig:161 Depends on: NETDEVICES [=y] && NET_CORE [=y] && NETCONSOLE [=n] && SYSFS [=y] && CONFIGFS_FS [=m] && (NETCONSOLE [=n]!=y || CONFIGFS_FS [=m]!=m) Location: -> Device Drivers -> Network device support (NETDEVICES [=y]) -> Network core driver support (NET_CORE [=y]) -> Network console logging support (NETCONSOLE [=n]) So, NETCONSOLE_DYNAMIC depends on NETCONSOLE, which cannot be configured for PREEMPT_RT_FULL